The present invention provides an explosion-proof miniaturized combustible gas sensor, comprising: a metal casing having an accommodation space therein; a wire mesh, a vertical surface perpendicular to a side surface where the wire mesh is located and the other side surface opposite thereto being used as a transfer surface of the combustible gas; a heat insulation module embedded in the metal casing; a detection module sensitive to a combustible gas; a compensation module insensitive to a combustible gas and matching the detection module; where the detection module has a higher catalytic combustion activity than the compensation module; a sealant, where a bonding length of the sealant in the accommodation space of the metal casing is used as an effective bonding surface, and the effective bonding surface is perpendicular to the transfer surface. The present invention has the advantages of a miniaturized size, good explosion-proof property and reliable performance.

Less than a month after announcing a 10 percent reduction to its workforce, or a loss of about 130 jobs, RAE Systems gave its chief executive and co-founder Bob Chen a 25 percent raise April 11, boosting his salary by $70,000 to $350,000, according to an SEC filing. Chief Financial Officer Randall Gausman was also given a raise in his salary, which climbed $25,000, or 11 percent, to $250,000.
Chen was also given an option good for 200,000 shares, which closed the day they were granted at day at $1.80, down about a third from the end of 2007. They’ve lost value every year since 2005.
RAE’s biggest shareholder probably is OK with the arrangement, because he is the same Robert Chen, who owned some 15.7 million shares, or 27 percent of the company, as of February 2007.
“Driving profitable revenue growth is our top priority in 2008,” said Chen in a statement
announcing the job cuts March 28. Revenue for the San Jose supplier of technology used to detect hazardous materials rose 34 percent last year to a record $90.9 million. Its net loss, however, grew from $1.5 million in 2006 to $14.7 million last year, also a record.